Quote:
Originally Posted by giordano
... focusing aids on reflex cameras don't seem to work at apertures below about f/5.6, especially in bad light. Does electronic focus measurement at the sensor do any better? If not, the 'electronic RF' will want auto-diaphragm lenses...
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Electronic focus measurement at the sensor shouldn't depend on a particular lens aperture, only on microcontrast at the sensor. This implies better lens = snappier focus.